Attachment for earthworking-machines



L. H. TOWNER.

ATTACHMENT FOR EARTHWORKING MACHINES APPLICATION FILED AUG.29, 1919.1,346,432, Patented J uly 13, 1920,

2 SHEETS-SHEET I.

WITNESSES MENTOR A TTOR/VE Y8 L. H. TOWNER.

ATTACHMENT FOR EARTHWORKING MACHINES.

APPLICATION FILED Aue.29, 1919.

1, 46,432, Patented July 13, 1920.

2 SHEETS-SHEET 2.

4 TTORNE) 3 U T A L\. E: :1

UNITED STATES LEROY HILLEB TOWNER, OIE MUSKOGEE, OKLAHOMA.

ATTACHMENT FOR EARTI-IWORKING-MACHINIES.

Specification of Letters Patent.

Patented July 13, 1920.

Application filed August 29, 1919. Serial No. 320,612.

To old whom it may concern Be it known that I, LEROY H. TowNnR, acitizen of the United States, residing at Muskogee, in the county ofMuskogee and State of Oklahoma, have invented new and usefulImprovements in Attachments for l9arthworking-Maehines for PreventingSide Draft or Side skidding, of which the following is a specification.

My invention relatesto an attachment for an earth working machine, suchas road grader, road drag, or the like, for engagement with the earth orroad bed, to prevent side draft or side skidding of the machine.

An important object of the invention is to provide an anti-skiddingrotatable disk, suitably connected with the earth working machine, andoperating within the earth for a suitable depth, for forming positivemeans to prevent side draft or skidding of the machine.

A further object of the invention is to provide simple and strong meansto vertically adjust the anti-skidding disk, So that it may be elevatedabove the earth to clear the same, during the transportation of themachine.

A further object of the invention is to provide an attachment of theabove mentioned character, which may be secured to the ordinary earthworking machine without materially altering the. construction of suchmachine.

A further object of the invention is to provide an attachment of theabove mentioned character, which is simple in con struction, strong,durable, cheap tomanufacture and is located in a position, in use,whereby it in no way impairs the operation of the elements of the earthworking machine.

Other objects and advantages of the in- 'vention will be apparent duringthe course of the following description.

In the accompanying drawingsforming a part of this specification, and inwhich like numerals are employed to designate like parts throughout thesame.

Figure 1 is a side elevation of the antiskidding attachment embodying myinvention.

Fig. 2 is a plan view of the same, and,

Fig. 3 is a transverse section taken on line 3-3 of Fig. 1.

In the drawings, wherein for the purpose of illustration is shown apreferred embodiment of my invention, the numeral 5 designates the frameof an earth working machine, such as a grader or drag, a combined graderand drag, or similar machine used for more or less similar purposes. Therear .as shown. The beams 10 are rigidly connected, intermediate theirends, by a transverse plate 13, and a transverse angle iron 14, theseparts being secured together by rivets 15 or the like.

At their forward ends the beams 10 engage hinge-straps 15, securedthereto by rivets 16 or the like, and these hinge-straps aredisposedbetween pairs of hinge-straps 17 and pivoted thereto by bolts 18. Thehinge straps 17 are secured to the rear axle G by rivets 19 or the like.It is thus seen that the frame 9 is pivoted to the rear portion of theframe 5, to swing in a substantially vertical plane. I

Means are provided to raise and lowerthe frame 9,. comprising anoperating shaft or screw 20, having screw'threads 21. A hand wheel 22 isrigidly secured to the upper end of this operating shaft or raisingscrew. The shaft or screw 20 has its screwthreaded portion engagingwithin a support nut 23, provided with trunnions 24,,pivoted withlnopenings formed in. brackets 25, in turn secured to the rear end 26 ofthe frame 5. The shaft or screw 20 is therefore pivotally sup ported andlongitudinally adjustable by rotating the same.

The lower end 26 of the shaft or screw 20 is loose and is rotatablewithin a sleeve 27 having no internal screw-threads formed upon a hollowcoupling block 28, such end carrying a nut 29, rigidly secured thereto,and arranged within the hollow coupling block or element. It is thusseen that the shaft or screw 20 has a swiveled connection with thecoupling block or element 28.

Depending from this coupling block or element and preferably formedintegral therewith is aflange 30, having an opening 31, pivotallyreceiving a U-bolt 32, which is This frameembodies side beams secured tothe transverse angle'iron 14: by

nuts 33,'said U-bolt passing through open ings in the'transverse angle1ron.

The numeral 34 designates an anti-skid disk, the edge of which may besuitably This disk has a centralfo'pene sharpened. mg 35, receiving anaxle 36. The anti-skiddlng: disk 3% is, reinforced by castings 37,

arranged upon opposite sides thereof, and

having radial ribs 38, and-hubs 39. The reinforcing castings 37 anddisks are secured together by rivets 40, while bolts 4:2 lock thehubs'39 to the axle36. v

Tlieaxle-36is journaled in bearings 43, bolted-or otherwiserigidlysecured to the parallel portions 11 of the arms 10, as

5 shown at 44. Thesebearings maybe lubricated-by grease cups 45,asshown.

The disk34 has its upper portion covered by a curved guard the forwardend of which isattached to thetransverse plate 13, as shown at 46. 'Therear end of this guard is secu'red to an inverted Ushaped support 47,which has its lower ends attached to the parallel 'portions ll.

r In the operation, of the attachment, by

1 proper rotationof the shaft orscrew 20, the

frame 9 may be lowered and the disk 34: will enter theearth orroadbedfor a suitable distance. It is obvious that this disk willthenpositively prevent sidedraft or skidding of the earth workingmachine. By

turning the shaft 20 in an opposite direc' 7 tion, the frame 9 may beelevated so that the disk will be spaced from the soilfor-transportation purposes.

I wish it to be understood that the invention is in no sense restricted"to the em ployment of a verticallyswinging frame for.

connecting the disk with the" earth working machlne, as various otherconstructionsmay be emp'loyecl"vvli1cl1 will permit of a verticaladjustment of the disk. itis to be'also understood that the diskmay beemployed size, and arrangement of parts maybe resorted towithoutdeparting from'the spirit of my invention, or the scope of thesub- V screw.

2. The combination with anearth working machine, of an earthengagi'ngdisk, a vertically swinging frame carrying the disk and pivoted to saidmachine, a raising screw, a support nut engaging theraising screw andpivoted upon said machine, means to turn the raising screw, andacoupling member swiveled upon the lower end of the raising screw andpivotally and positively connected withthe swinging frame.

3. an attachment for an earth working machine, comprising anapproximately V.-

shaped frame, means forpivotally connecting the open end ofthe' J-shapedframe with said machine, a rotatable disk arranged in the closed end ofthe V-shaped frame and connected therewith, a transverse memberconnectedwvith said V-shaped frame, and raising and lowering meanspositively connected with the transverse member and adapted for positiveconnection with said machine. H

4. An'attachment for anearth Working machine, comprising "anapprofiirnately V- shaped frame, means for-pivotally andpositivelyconnecting the open end of the V- shaped frame with saidmachine, a rotatable disk arranged within and connectedwith the closedend of the ii-shaped frame, a transverse membercon'nected with theV-shaped frame, and a raising-screw positively con nected with thetransverse member and adapted for positive connection with said machlne,all as and for the purposes set

